Modelling of laser heating with induction pre-heating and post-heating and its experimental verification

0439931 - ÚT 2015 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Kotlan, V. - Pánek, D. - Hamar, R. - Doležel, Ivo
Modelling of laser heating with induction pre-heating and post-heating and its experimental verification.
Proceedings of IECON 2014. Dallas: IEEE Industrial Electronics Society, 2014, s. 3246-3251. ISBN 978-1-4799-4033-2. ISSN 1553-572X.
[Annual Conference of the IEEE Industrial Electronics Society /40./. Dallas (US), 29.10.2014-01.11.2014]
Grant ostatní: GA TA ČR(CZ) TA03010354
Institucionální podpora: RVO:61388998
Klíčová slova: laser hardening * induction heating * numerical analysis
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
http://iecon2014.org/

A novel prospective way of continuous surface heating of steel work-pieces by a laser beam is modelled. The process is supplemented with pre-heating and post-heating of the heated parts by a classic inductor in order to avoid unacceptably high temperature gradients and subsequent mechanical stresses in the processed material. Its continuous mathematical model is solved numerically in 3D in the hard-coupled formulation. The solution takes into account all important non-linearities (saturation curve of the hardened steel and temperature dependences of its physical properties). The methodology is illustrated with a typical example. Selected results of computation are verified experimentally.
Trvalý link: http://hdl.handle.net/11104/0243131